# A193539 (b-file synthesized from sequence entry)
0 1
1 8
2 64
3 512
4 3200
5 19392
6 112128
7 598016
8 3088896
9 15362408
10 73331264
11 340653056
12 1538392064
13 6762336448
14 29072665600
15 122299068416
16 504128374784
17 2040557142592
18 8116582974656
19 31760991869952
20 122408808197120
21 464983163273216
22 1742277357389312